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02495aam a2200349 4500 001 9FFDB1689ABF11EC841DE5674CECA4DB 003 SILO 005 20220303010028 008 211111s2011||||||||||||||||||||||||und|u 020 $a 1591933722 020 $a 9781591933724 040 $d TxAuBib $d SILO 100 1 $a Lynch, Dan R. 245 1 $a Agates of Lake Superior $h [Paperback] : $b stunning varieties and how they are formed. 264 1 $a Cambridge, Minnesota : $b Adventure Publications, $c [2011] 300 $a 233 pages : $b color illustrations, maps ; $c 28 cm. 505 $a Quartz and Chalcedony -- Agate basics -- Lake Superior agates -- Distribution -- Finding and identifying agates -- Formation theories -- Source of Silica -- Infiltration channels -- Concluding agate formation -- Post formation -- Agate varieties -- Adhesional banded agate -- Banded quartz agate -- Eye agate -- Floater agate -- Agate geode -- Gravitationally banded agate -- Skip-an-atom agate -- Vein agate -- Whorl agate -- Inclusions and replacements -- Copper replacement agate -- Crystal impressions -- Dendritic agate -- Fragmented membrane agate -- Jasp-agate -- Mineral inclusions -- Moss agate -- Plume agate -- Sagenitic agate -- Stalactitic agate -- Tube agate -- Color variations -- Colored macrocrystalline quartz -- Paint agate -- Rare coloration -- Surface colorations -- Weathering -- Brecciated agate -- Faulted agate -- Peeled agate -- Ventifacts -- Water-washed agate -- Final topics -- Before and after -- What is an agate? 520 $a The definitive book on Lake Superior's agates is here. If you're a casual rock collector, you will find Agates of Lake Superior fun, interesting and beautiful. If you're a more advanced hobbyist, you will appreciate this professional and scientific resource. The book provides a thorough examination of Lake Superior's strange and unique agate varieties, as well as a critical look at agate formation theories, tips on how to find and identify agates, where to look for them and how collectible your agates may be. 541 $d 20211111. 650 4 $a Rocks. 650 4 $a Agates. 650 $a Geology. 651 7 $a Ontario. 651 4 $a Lake Superior Region. 651 $a Michigan. 651 $a Minnesota. 651 $a Wisconsin. 700 $a Lynch, Bob. 941 $a 2 952 $l DPPE403 $d 20240611012053.0 952 $l RZPE145 $d 20220303010517.0 956 $a http://locator.silo.lib.ia.us/search.cgi?index_0=id&term_0=9FFDB1689ABF11EC841DE5674CECA4DBInitiate Another SILO Locator Search